[dpdk-dev] [PATCH 1/2 v3] i40e: support floating VEB config

[Zhe Tao <zhe.tao@intel.com>]

Add the new floating related argument option in the EAL.
Using this parameter, all the samples can decide whether to use legacy VEB/VEPA,
 or floating VEB.
Even the floating argument is provided in the EAL, but this floating
feature are only support for FVL so far.

Signed-off-by: Zhe Tao <zhe.tao@intel.com>
---
 doc/guides/testpmd_app_ug/run_app.rst      | 4 ++++
 lib/librte_eal/common/eal_common_options.c | 4 ++++
 lib/librte_eal/common/eal_internal_cfg.h   | 1 +
 lib/librte_eal/common/eal_options.h        | 2 ++
 4 files changed, 11 insertions(+)

diff --git a/doc/guides/testpmd_app_ug/run_app.rst b/doc/guides/testpmd_app_ug/run_app.rst
index f605564..2f02f63 100644
--- a/doc/guides/testpmd_app_ug/run_app.rst
+++ b/doc/guides/testpmd_app_ug/run_app.rst
@@ -156,6 +156,10 @@ See the DPDK Getting Started Guides for more information on these options.
 
     Use malloc instead of hugetlbfs.
 
+*   ``--floating``
+
+    Enable floating feature for virtual ethernet switch in the NIC.
+    Now only Intel i40e NIC supports this feature.
 
 Testpmd Command-line Options
 ----------------------------
diff --git a/lib/librte_eal/common/eal_common_options.c b/lib/librte_eal/common/eal_common_options.c
index 29942ea..29ed7bf 100644
--- a/lib/librte_eal/common/eal_common_options.c
+++ b/lib/librte_eal/common/eal_common_options.c
@@ -95,6 +95,7 @@ eal_long_options[] = {
 	{OPT_VFIO_INTR,         1, NULL, OPT_VFIO_INTR_NUM        },
 	{OPT_VMWARE_TSC_MAP,    0, NULL, OPT_VMWARE_TSC_MAP_NUM   },
 	{OPT_XEN_DOM0,          0, NULL, OPT_XEN_DOM0_NUM         },
+	{OPT_FLOATING,          0, NULL, OPT_FLOATING_NUM         },
 	{0,                     0, NULL, 0                        }
 };
 
@@ -896,6 +897,9 @@ eal_parse_common_option(int opt, const char *optarg,
 			return -1;
 		}
 		break;
+	case OPT_FLOATING_NUM:
+		conf->floating = 1;
+		break;
 
 	/* don't know what to do, leave this to caller */
 	default:
diff --git a/lib/librte_eal/common/eal_internal_cfg.h b/lib/librte_eal/common/eal_internal_cfg.h
index 5f1367e..19b321a 100644
--- a/lib/librte_eal/common/eal_internal_cfg.h
+++ b/lib/librte_eal/common/eal_internal_cfg.h
@@ -68,6 +68,7 @@ struct internal_config {
 	volatile unsigned xen_dom0_support; /**< support app running on Xen Dom0*/
 	volatile unsigned no_pci;         /**< true to disable PCI */
 	volatile unsigned no_hpet;        /**< true to disable HPET */
+	volatile unsigned floating;       /**< true to enable floating VEB */
 	volatile unsigned vmware_tsc_map; /**< true to use VMware TSC mapping
 										* instead of native TSC */
 	volatile unsigned no_shconf;      /**< true if there is no shared config */
diff --git a/lib/librte_eal/common/eal_options.h b/lib/librte_eal/common/eal_options.h
index a881c62..413c9e6 100644
--- a/lib/librte_eal/common/eal_options.h
+++ b/lib/librte_eal/common/eal_options.h
@@ -83,6 +83,8 @@ enum {
 	OPT_VMWARE_TSC_MAP_NUM,
 #define OPT_XEN_DOM0          "xen-dom0"
 	OPT_XEN_DOM0_NUM,
+#define OPT_FLOATING          "floating"
+	OPT_FLOATING_NUM,
 	OPT_LONG_MAX_NUM
 };
 
-- 
2.1.4